Chalermchit A, Ruksasri P, Wanichkittikul K, Masaunjik N, Yangkham P. Valuable Living and Quality of Life for the Elderly in the 21st Century. IARJ [internet]. 2022 Aug. 26 [cited 2025 Mar. 13];2(4):557-70. available from: https://so03.tci-thaijo.org/index.php/IARJ/article/view/262851